新能源汽车预充控制原理及故障案例分析  

New Energy Vehicle Pre-charging Control Principle and Failure Case Analysis

作　　者：景志敏[1] 周欢[1] JING Zhi-min;ZHOU Huan(Chongqing Energy Vocational College,Chongqing 402260,China)

机构地区：[1]重庆能源职业学院,重庆402260

出　　处：《内燃机与配件》2022年第5期136-138,共3页Internal Combustion Engine & Parts

摘　　要：近年来,新能源汽车发展势头迅猛,已然成为未来汽车的必然趋势。2021年,我国新能源汽车销量预计将达到340万辆,较上一年翻了约1.5倍。新能源汽车动力系统采用高压电,对不同使用环境下的安全性、稳定性、可靠性等方面都有着极高的要求。比如新能源汽车高压上电时,都设计有预充控制环节来保护高压回路及高压部件免受大电流损坏。本文主要针对新能源汽车预充控制过程及原理进行分析讨论,并结合实际故障案例诊断排除过程,讲述预充故障的检测方法。In recent years,the rapid development of new energy vehicles has become an inevitable trend for future automobiles.In 2021,China's new energy vehicle sales are expected to reach 3.4 million units,which is about 1.5 times higher than the previous year.The power system of new energy vehicles uses high-voltage electricity,which has extremely high requirements for safety,stability,and reliability in different use environments.For example,when a new energy vehicle is powered on at a high voltage,a pre-charge control link is designed to protect the high-voltage circuit and high-voltage components from high-current damage.This article mainly analyzes and discusses the pre-charge control process and principle of new energy vehicles,and describes the detection methods of pre-charge faults in combination with the actual fault case diagnosis and elimination process.

关 键 词：预充控制 预充接触器 正极接触器 母线电容 

分 类 号：U463.99[机械工程—车辆工程]